Nut-lock.



W. R. MILLARD.

NUT LOCK.

LED sun APPLICAT v 5,1914. 1,172,722. Patented Feb. 22,1916.

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WILLIAM R MILLARD, or cnnnunivn, TEXAS:

NUT-LOCK.

Application filed J'un 5, 1914. Serial No. 843,153.

To all whom it may concern: I

Be it known that I. WILLIAM R. MILLARD,

a citizen of the United States, residing at. Clebiirne, in the county of Johnson and, a new and State of Texas, have invented v I useful Nut-Lock; and I do' hereby declare the following to be a full, clear,and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to' make and use the-same.

This invention relates to a new and useful nut lock, and the object in view is to provide a simple and efficient nut lock having improved features of construction.

a single len 'th of spring wire material, the opposite ends of the wire material extend laterally and provided with a return bent portion, forming arms. The spring coils are designed to fit tightly andfrictionally the threads of the bolt, and by pressing said arms toward one another, said coils may be expanded, so that the device may be partially rotated in one direction or the other. The arms arev provided with inter-engaging locking means tohold the arms together, so that the device may be unscrewed from the threads of the bolt. i In practical fields the details of construction may necessitate alterations, falling within the scope of what is claimed. 7

The invention comprises further features and combination of parts, as hereinafter set forth, shown in the drawings and claimed. In the drawings :Figure 1 is a view in perspective showing'the improved nut looking device as applied. Fig. 2 is a plan view showing two of the nut locking devices employed. Fig. 3 is an enlarged detail view of the device. Fig. 4 is a perspective view illustrating another form of construction.

Referring more especially to the draw-' ings, 1 designates the form of nut 2..

The nut locking device comprises a single length of spring wire constructed tO'fOI'IIl a bolt having the usual spring coil 3, designed to engage the threads 7 of the shank of the bolt. The opposite ends of the spring wire material terminate in lat- Copies of this patent may-be obtained for five cents each, by addressing the Washington, D. C.

Specifica 'pn of Letters Patent. Patented Feb-.22, 1916.

eral extending portions 4 provided with a return bent to be grasped .by the fingers to pull the arms together, for detaching, the nut locking/device. When said arms are brought together, they are portion 5, thereby forming arms,

whereby the coils may be expanded a.

lockedin' such positions by the hooks 8, en-

gaging the lateral extending portions 4. In

Fig. 2 there are two nut locking devices employed,'one upon each side'of said nut,

position.

The invention having been set forth, what 7 is claimed as new and useful One of the features of construction isthe provision of a spring coil constructed from 1. A nut lock devicecomprising a single length of wire material constructed to form a spring coil having'several convolutions,

designed to engage said other arm, thereby holding the loops pressed ,toward each other for expanding the coil whereby the same may be detached from a bolt shank.

both of which act together to lock the nut in,

each hookextending toward and be-,' mg substantially opposite theother arm of each loop and being A nut lock device comprising a single length of wire material constructed to form a spring coil having several convolutions, the end portions of the end convolutions of the coil being extended substantially tangentially to the coil forming substantially triangular shaped loops, one arm of each of said loops having a hook extending toward the opposite arm of said loop, said hooks designed" to engage diagonally opposite arms of the opposite loops to hold the loops pressed together, thereby holding the convolutions ofthe coil expanded, whereby the coil may be easily detached from the bolt shank.

the extremity of;

In testimony whereof I have signed my name to this-specification in the presence of two subscribing witnesses.

'WILLIAMR. MILLARD;

Witnesses: C. C. BYERS, S. O. ConLEY."

Commissioner of Patents, 

